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1988 BRAKES
Jeep – Brake System Bleeding
This also for: Cherokee, Comanche, Grand Wagoneer, Wagoneer, Wrangle

• MASTER CYLINDER BLEEDING
• HYDRAULIC CONTROL VALVES
• VACUUM BLEEDING
• PRESSURE BLEEDING
• MANUAL BLEEDING
• BLEEDING SEQUENCE

Bench Bleeding

1. Master cylinder must be bled before installation to prevent excessive amounts of air from entering the brake system, creating poor brake operation.
2. Place master cylinder in soft-jawed vise. DO NOT tighten vise enough to damage master cylinder. Install bleeder tubes in both outlets of master cylinder. See Fig. 1. Fig. 1: Bleeding Master Cylinder Courtesy of American Motors/Jeep Corp.
3. Fill master cylinder with clean brake fluid that meets DOT 3 specifications. Ensure that the end of bleeder tubes are submerged in the brake fluid.
4. Using proper sized rod, apply and release master cylinder until no air bubbles exist in brake fluid flow. Once all air bubbles are gone from master cylinder secure cap and install.
5. Bleeder tubes should be left installed on master cylinder until master cylinder in installed. Master cylinder must be bled at brake lines and wheels after installation.